Sannyasin wrote: I have an interesting theory which may be complete crap but here it goes.
Toshihiro Nagashi( creator of Yakuza series and one of SEGA's most important people) has said that 26th August they will anounnce a new game. 26th of August is within the Gamescon timeline so assuming there have been talks between Yu Suzuki and SEGA, I predict that Toshihiro will announce a fully Shenmue remake under his team. If i'm not mistaken, Toshiro was involved in the production of Shenmue.
Further, with the recent Deep Silver partnership( the same publisher for Yakuza Kiwami), I believe something is in the works regarding Shenmue HD but it's probably just wishful thinking.
Interesting thought but producing a Shenmue would be a regression for him. He surely wants to create his own IP or continue his Yakuza franchise instead. Remakes are also a very boring task for developers since it allows them no freedom so I don't believe it at all. Nagoshi or not, the most realistic we can wish is polished HD remasters.